Antonio Guterres Holds Final Climate Summit at UN General Assembly

On the sidelines of the United Nations General Assembly in New York, where more than 130 heads of state and government are succeeding one another at the podium, the organization's Secretary-General, Antonio Guterres, is organizing a climate summit on Wednesday, September 23, 2026.

The stated objective of the meeting is to reinvigorate international climate action at a time when many observers believe the pace of commitments made by states is insufficient given the scale of environmental challenges.

Throughout his tenure, Antonio Guterres has established himself as one of the most vocal international leaders on the urgency of climate change, repeatedly calling on governments and major economic powers to accelerate reductions in greenhouse gas emissions.

This climate summit comes as his mandate at the helm of the UN is coming to an end, a deadline that has led several media outlets and diplomats to present it as one of his final major initiatives on this issue before his departure.

The precise format of the meeting, the list of participants, and the expected announcements have not been detailed in available information. The UN General Assembly remains, each year, an opportunity for many heads of state to clarify their national climate commitments before the international community.